Ethylbenzene

Ethylbenzene
Skeletal formula of ethylbenzene
Ball-and-stick model of the ethylbenzene molecule
Space-filling model of the ethylbenzene molecule
Names
Preferred IUPAC name
Ethylbenzene
Other names
Ethylbenzol; Phenylethane; alpha-Methyltoluene; EB
Identifiers
3D model (JSmol)
Abbreviations EB
1901871
ChEBI
ChEMBL
ChemSpider
DrugBank
ECHA InfoCard 100.002.591 Edit this at Wikidata
KEGG
RTECS number
  • DA0700000
UNII
  • InChI=1S/C8H10/c1-2-8-6-4-3-5-7-8/h3-7H,2H2,1H3 checkY
    Key: YNQLUTRBYVCPMQ-UHFFFAOYSA-N checkY
  • InChI=1/C8H10/c1-2-8-6-4-3-5-7-8/h3-7H,2H2,1H3
    Key: YNQLUTRBYVCPMQ-UHFFFAOYAM
  • CCc1ccccc1
Properties
C8H10
Molar mass 106.168 g·mol−1
Appearance colorless liquid
Odor aromatic[1]
Density 0.8665 g/mL
Melting point −95 °C (−139 °F; 178 K)
Boiling point 136 °C (277 °F; 409 K)
0.015 g/100 mL (20 °C)
log P 3.27
Vapor pressure 9.998 mmHg
-77.20·10−6 cm3/mol
1.495
Viscosity 0.669 cP at 20 °C
0.58 D[2]
Thermochemistry
1.726 J/(gK)
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Flammable
GHS labelling:
GHS02: FlammableGHS07: Exclamation markGHS08: Health hazardGHS09: Environmental hazard
Danger
H225, H304, H320, H332, H335, H336, H351, H360, H373, H400, H411
P201, P202, P210, P233, P240, P241, P242, P243, P260, P261, P264, P271, P273, P280, P281, P301+P310, P303+P361+P353, P304+P312, P304+P340, P305+P351+P338, P308+P313, P312, P314, P331, P337+P313, P370+P378, P391, P403+P233, P403+P235, P405, P501
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformFlammability 3: Liquids and solids that can be ignited under almost all ambient temperature conditions. Flash point between 23 and 38 °C (73 and 100 °F). E.g. gasolineInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
2
3
0
Flash point 22.22 °C (72.00 °F; 295.37 K)
430 °C (806 °F; 703 K)
Explosive limits 1–7.8%
Lethal dose or concentration (LD, LC):
5460 mg/kg
4000 ppm (rat, 4 hr)[3]
NIOSH (US health exposure limits):
PEL (Permissible)
 TWA 100 ppm (435 mg/m3)[1]
REL (Recommended)
 TWA 100 ppm (435 mg/m3) ST 125 ppm (545 mg/m3)[1]
IDLH (Immediate danger)
 800 ppm[1]
Related compounds
styrene, toluene
Related compounds
 benzene
ethylcyclohexane
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Ethylbenzene is an organic compound with the formula C6H5CH2CH3. It is a highly flammable, colorless liquid with an odor similar to that of gasoline. This monocyclic aromatic hydrocarbon is important in the petrochemical industry as a reaction intermediate in the production of styrene, the precursor to polystyrene, a common plastic material. In 2012, more than 99% of ethylbenzene produced was consumed in the production of styrene.

  1. ^ a b c d NIOSH Pocket Guide to Chemical Hazards. "#0264". National Institute for Occupational Safety and Health (NIOSH).
  2. ^ Lange's Handbook of Chemistry (15th ed.). 1999.
  3. ^ "Ethyl benzene". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).